.app-footer {
    height: 48px;
    line-height: 48px;
    text-align: center;
    font-size: 12px;
    color: #999;
    margin-left: 225px;
    position: absolute;
    bottom: 0;
    left:0;
    right:0;
    border-top: 1px dotted #cccccc;
}